Finding the Fourth Proportional to 136,846.34, 188,848.87 and 76,417.70
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Solution
The fourth proportional to 136,846.34, 188,848.87 and 76,417.70 is: 105,456.95
Step by Step Solution
- Step 1: Write the proportion equation
136,846.34 : 188,848.87 = 76,417.70 : x - Step 2: Convert to fraction form
136,846.34/188,848.87 = 76,417.70/x - Step 3: Cross multiply
136,846.34x = 188,848.87 × 76,417.70 - Step 4: Simplify right side
136,846.34x = 14,431,396,574.08 - Step 5: Solve for x
x = 14,431,396,574.08/136,846.34 - Step 6: Final answer
x = 105,456.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.